Will the new recoil spring assemblies be backwards compatible to the older guns?
basically, can I buy some of the gen4 g17 recoil spring assemblies for my Gen 3 guns?
from what I’ve seen, that spring is intended to almost be a “lifetime” spring…and since I am going to have to change a few out soon anyway, if its possible I will try and get these…
READ…GotM4…GRAB SOME FOR ME 
No. Gen4 requires a new frame and slide to accomodate the new recoil spring assy.
well shucks…thanks for the quick answer…maybe the old spring assemblies will be cheap now 
is it the same recoil spring used in the 3rd gen subcompact glocks?
Similar in concept but not the exact same.
Exterior frame and slide dimensions are the same between Gen 3 and 4.
However, as stated by RAM Engineer, the new recoil assembly will not fit because it is wider than the generation 3 guide rod and spring.
The new frame is wider internally forward of the locking block and changes were made internally to the slide for it to accept the new assembly.
has anyone had a chance to see if the Gen 4 trigger bar is the same as the Gen 3’s ?
also will the gen 4 G22 recoil spring assemblies be interchangeable with the G17, or are they of different weights?
thanks
I’m wondering if the Gen 4 would be available in Cali. Since I kinda want a G17 and could wait for Gen 4’s to hit the shelves.
My guess is NO. 
Is the guide rod plastic or steel? 
You mean cheaper? They’re already less than $10! 
The new guide rod is not entirely plastic. It has a metal sleeve between the large spring and small spring, and the rear half has a metal flange where it meets up at the locking lug. As stated above is not backwards compatible.
Stand by, I have one in my safe I will take pics of.
Differences between Gen III G22 and Gen IV G22 recoil springs
Enlarged guide rod opening in front of slide on Gen IV G22
Mag Release. The new one is almost flat against the frame, and is about the size of a gas pedal in an F250. It’s extremely easy to manipulate and is very low-profile. I like it.
Kev, before shot we got a few G22 Gen 4s.
Not the Gen4s are backward compatible. The slides are made here in the US and the recoil springs and slide apertures are different. IIRC the locking block are different as well as the barrel. The mag catch is reversible and longer from front to back. Older G22 mags will work in the Gen4 as long as the mag catch is set up for a right handed shooter. I talked to Dave Sevigny at length about the Gen4 and he says it shoots a lot softer. Feeling the ones we had at the store and the ones we got it the recoil spring is stiffer. The gun does come with 3 mags and is a little more expensive. I want one but I want a G19. I don’t use a G17 for much of anything but I carry a G19 everywhere I can legally concealed.
We had breakfast with Lipseys (distributor) and Glock Wed morning. The Gunny was there as well as the Glock shooting team. We sat with Dave Sevignys wife and Randi Rogers husband. Nice people.
Since nobody knows, I will have to succumb and expose myself to Glock Talk <Oh the Inhumanity!> :o
The Gen IV trigger bar has a stamped protrusion on the FPS lifter that the GEN III does not. So no, they are not the same.
From what I understand the G17 Gen 4 and the G22 Gen 4 will use the same recoil springs just like the G22 Gen 2 & 3 share the same recoil springs with the G17 Gen 2 & 3.
I was under the impression that the 9mm and .40 cal Glocks used different recoil springs in the Gen3. Granted I had just worked a 15 hr detail before my last recert. so I may have missed something. No one in my area carries a G22 so I don’t see many of them.
I’ve been through the Glock Armorers course twice now, but I’m human and can always be wrong. I don’t have my Glock armorers manual here at home but going of my recollection:
From my understanding of working on them for a living for the last 5yrs is that the G17, G17L, G22, G24, G31, G34 & G35 use the same recoil spring (I think the G37 uses the same one as these too).
The G19, G23, G32 and I believe the G38 use the same recoil spring.
The G26, G27, G33 and I believe the G39 uses the same recoil spring.
The G20, G20SF, G21 and G21SF use the same spring.
The G29, G30, G30SF and G36 use the same spring.
IIRC the only spring in the .40 Glocks vs. 9mm Glocks which is different is the mag spring.
Is there any discussion about discontinuing the Gen 3 guns? I’m wondering if parts will become an issue and if I should just make sell my old model Glocks and make a complete switch over.
Good to see you out there Rob!
When are you guys getting in the G17-4? and any news on a release date for a G19-4?
-J